Fig. 4: Magma domain of the Campi Flegrei.
From: Magma chamber failure and dyke injection threshold for magma-driven unrest at Campi Flegrei caldera
a Sketched cartoon of the magmatic plumbing system of the Campi Flegrei illustrating the volume of the active sill-like magma chamber, the volume variation ΔVm, and the erupted volume Ve. b Binary diagram showing the relationship between the recharge volume and the magmatic excess pressure necessary to bring the main chamber to rupture. The yellow dashed line indicates the median value of juvenile crystallinity (reciprocal of melt fraction) in Epoch 3b erupted rocks49. SMG Santa Maria delle Grazie, OL Olibano, AC Accademia, PA Paleoastroni, SO Solfatara, A1-7 Astroni, FL Fossa Lupara, AV Averno-2, CM Capo Miseno, MN Monte Nuovo, subscripts s source, e erupted. Triangles indicate erupted magma DRE of post 4.4 kyr eruptions; Inverted triangle indicates the shallow source of Monte Nuovo.
